Spring-hinge.



N0.l 645,397. Pater-lied Mar. I3,'I900.

J. JACKSUN. v

SPRING HINGE'.

(Apucaeion med .my 27, 1899.)

v 2 Sheets-Sheet I.

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PatentedvMar.. I3, |900.

No. S45-,397.

.LVJAcKson SPRING HINGE.

(Application led July 27, 1899.)

2 Sheets-Sheet .2.

(No Model.)

a fr a A UNITED STATES PATENT EEICE.

JAMES JACKSON, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OE Two- THIRDS To CHARLES Z. DE YOUNG, OF SAME PLACE.

SPRING-HINGE.

SFECIFICATION forming part of Letters I'atent No. 645,397, dated March 13, 1900.

Application iiled July 27,1899.

, ated by said gearing, whereby the door is nicely hung and may be easily opened, and it automatically and noiselessly returns to its normal position, the means employed and the operation of the same being hereinafter described and the novel features pointed outin the claims that follow the specification.

zo Figures 1 and 2 represent partial vertical sections and partial side elevations of a springhinge embodying my invention. Fig. 3 represents a top view thereof. Fig. 4 represents aperspective View of adetached portion. Fig. 5 represents a side elevation of a detached portion. Fig. 6 represents a perspective view of a detached portion. Fig. 7 represents a vertical section of a portion on line .fr 0c, Fig. 3.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates a box which is set into a door-frame in a recess I A' therein, at the upper inner corner thereof.

B designates a horizontally-arranged spur wheel or pinion which is mounted in the box A and has its lower axial pin of the form of a collar C, which passes freely through the bottom wall of the box and is secured by a screw and dowels or other means to the plate D of the box D', which is firmly connected with the upper inner corner of a door E, so that the pinion B turns with the door as it is opened or closed inY either direction.

Meshing with the spur wheel or pinion B is the spur wheel or `pinion F, which is freely mounted on the upper end of the spindle G, whose upper portion is within the box A, and has its bearings in the top wall thereof. Firlnly connected with said spindle above the pinion F is the arm H. Loosely mounted on Said spindle below said pinion is the arm J,

Serial No. 725,223. (No model.)

the ends of said arms being adapted to abut at dierent times against the pin K, which projects above and below the pinion F near the periphery thereof and extends in a direction parallel with the spindle G, it being noticed that the sides of said arms H and J are recessed, as at L L, so as to receive the respective ends of the pin K. Projecting inwardly from the side of the box A adjacent to said arms H and J are studs or stop-pins M and N, against which the ends of the arms H and J are adapted to abut, as will be hereinafter set forth. Cast with or otherwise secured to the arm J is the sleeve P, having the vertical slot Q, in which is received one end of the spiral or coiled spring R, which enciroles the spindle G and has its lower end connected with the sleeve S, which is secured to the bottom of the spindle G, it being noticed that said sleeve S is mounted in the opening of an arm T, which is attached to the plate U, t-he latter being secured to the woodwork of the door-frame within the face-plate Uf, which covers the vertical opening or recess V in the door-frame, in which the spring R, sleeves P and S, and main portion of the spindle G are located. The sleeve S is provided with a series of openings S', into opposite sides of which the pin W is inserted, the spindle having a corresponding number of openings, so that when said pin is removed the sleeve S may be rotated by means of a pin or implement inserted in the proper opening S2, said sleeve carrying with it the adjacent end of the spring R, secured thereto, wherebythe tension of the latter may be adjusted, after which said pinWisagain insertedin theproper opening in said sleeve S and a relative opening in the spindle G, access being had to said sleeve through the openings W in the plate U when the plate Uf is removed.

Interposed between the spur wheel or pinion B and the top plate of the bOxA are ballbearings X, which ease the motions of said wheel or pinion. The lower portion of the door has secured to it, at the inner corner thereof, the face-plate Y, which `is mounted on the step Z, secured to the lower end of the door-frame. Interposed between said faceplate Y and the plate which carries said step Z are ball-bearings Z2, which ease the motion IOO of the door on said step and plate as its lower support.

The operation is as follows: When the door is opened, the gearing composed of the spur wheels or pinions is rotated. The pinion F is carried around, and one end of the pin K abuts, say, against the arm J and rotates the latter with it, said pinion and arm now being coupled, it being remembered that one end of the spring R is connected with the sleeve P on said arm. The other end of said spring is connected with the sleeve S, which is rigidly attached to the spindle G, and the latter is prevented from rotating owing to the contact of the arm I-I with the stud M of the box A. Hence the lower end of the spring is held immovable, the opening of the door having been easily accomplished noiselessly. Now the upper end of the spring follows the rotation of the sleeve P, and thus the spring is twisted or contracted, so that when the door is let go the opposite action of the spring is occasioned, and thus the door is returned to its normal position in a rapid, noiseless, and effective manner. Both arms I-I and J now abut against the studs M and Naud the dooris at rest. When the door is opened inthe opposite direction, the upper arm H is engaged by the upper pin K of the pinion F and carried around by the latter, thus rotating the spindle G and lower sleeve S and imparting a twist or torsion tothe spring R, it being noticed that the lower arm J abuts against the stud N, and as the sleeve Pis connected with said arm J and the upper end of the spring is attached to said sleeve it is evident that said end is held immovable. When the door is opened to the required extent, the spring is twisted or contracted, so that when the door is let go said spring exerts its reverse pressure on the door and restores the same to its normal position, the operation of the door being easy, effective, and comparatively noiseless, as in the previous case.

The box Dl has a removable side A2, so that when said side is displaced the adjacent portion of the door may be fitted within said box in a convenient manner, saidv side then being reapplied'and screws passed through the same, said portion of the door and the opposite side of the box thus firmly connecting the door and box.

Although I have shown the device at the top of a door, it is also applicable at the bot; tom, in which case the parts will be simply reversed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. Aspring-hingehavingaspindle,aspring, means for coupling said spring through intermediate mechanism with opposite ends of said spindle, gearing adapted to be operated by the opening of a door and impart torsion or twisting to one end of said spring, fixed and loose arms on said spindle, pins on a member of said gearing projecting in opposite directions therefrom for coupling it with said arms and stops'on a iiXed point adjacent to said gearing with which said arms are adapted to engage when at rest.

2. In a spring-hinge, a spindle, arms retspectively fixed and loose thereon, a gearwheel adapted to be coupled with either of said arms, a spring connected with said spinA die and the loose arm, a gear-wheel adapted to be connected with a Vdoor to be rotated by the same and meshing with the first-named gear-wheel whereby said spring is twisted and stops on the first-named gear-wheel for said arms.

3. In a spring-hinge, a spindle, arms respectively iixed and loose therein, the loose arm having a sleeve thereon freely encircling said spindle, a sleeve fixed to said spindleopposite to said loose arm, a spring attached to said sleeves, a pinion loose on said spindle, oppositely projecting pins on said pinion adapted to couple the latter with either 'of said arms, and a gear-wheel connectible with a door and meshing with said pinion.

4. In a spring-hinge, a spindle, a spring thereon, a pinion secured to said spindle, a gear-wheel connectible with a door, and mesh` ing with said pinion, reversely-operating arms respectively fixed and loose on said spindle, said spring being secured to the loose arm and the spindle, means for coupling said spring with the opposite ends of said spindle, and means on said pinion for coupling the same with said arms.

JAMEs JAoKsoN.

Witnesses:

J oHN A. WIEDERSHEIM, WM. CANER WIEDERSHEIM.

ICO 

